// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_EXTRAS_SQLITE_COOKIE_CRYPTO_DELEGATE_H_
#define NET_EXTRAS_SQLITE_COOKIE_CRYPTO_DELEGATE_H_

namespace net {

// Implements encryption and decryption for the persistent cookie store.
class CookieCryptoDelegate {
public:
    virtual ~CookieCryptoDelegate() { }

    // Return if cookies should be encrypted on this platform.  Decryption of
    // previously encrypted cookies is always possible.
    virtual bool ShouldEncrypt() = 0;

    // Encrypt |plaintext| string and store the result in |ciphertext|.  This
    // method is always functional even if ShouldEncrypt() is false.
    virtual bool EncryptString(const std::string& plaintext,
        std::string* ciphertext)
        = 0;

    // Decrypt |ciphertext| string and store the result in |plaintext|.  This
    // method is always functional even if ShouldEncrypt() is false.
    virtual bool DecryptString(const std::string& ciphertext,
        std::string* plaintext)
        = 0;
};

} // namespace net

#endif // NET_EXTRAS_SQLITE_COOKIE_CRYPTO_DELEGATE_H_
